Abstract:
The Chesapeake Bay Program Nutrient Point Source Database contains data from about 600 nutrient dischargers in the Bay watershed. This database provides facility information, average flow data, average concentration data and average load data as well as dynamic use-defined graphs.

This online database is readily accessible to CBP partners and local stakeholders in support of reevaluation of the nutrient load caps and setting of new nutrient loading cap goals.

Quality
After the data were received directly from the jurisdictions (MD, VA, DC, and PA) or retrieved from PCS (for DE, WV and NY), Procedures of data quality assurance and quality control (QAQC) were performed on the data. QAQC include range check, variation check, and comparing with previous years' data. All of abnormal data, ... blanks or errors found were returned to jurisdictions for verification and correction. Assumptions were also made at CBPO for data that could not be verified. The final data were returned to jurisdictions for review and approved by the point source work group.

The data history for each facilities, basin and jurisdiction has been checked for consistency.

CBPO Point Source Database was updated annually to include the latest data, which were processed with QAQC procedure at CBPO and approved by the point source work group representing different jurisdictions.

Data were electronically received and input into the database. Data corrections were hand entered and documented.